In which do will Middleton say "I do"? Photo: Samir Hussein, WireImage

Fashionistas around the globe rejoice!

A royal wedding is on the horizon and we all know what that means -- lots of talk about fairy-tale dresses, designer shoes, and of course, how Kate Middleton should style her hair on the day she marries Prince William.

Celebrity hairstylist Gilda Pastena of the Pierre Michel Salon in New York City suggests royal-wedding worthy dos for this soon-to-be princess, including a polished chignon; tousled updo; a half up, half down hairstyle; and braided bun.

Read on for details on these four looks and vote for which hairdo you think Middleton should wear with her platinum and 18-carat blue-sapphire diamond engagement ring.

Anne Hathaway wears a chignon with a brooch pin at the 2009 Oscars. Photos: Kevork Djansezian, Getty Images | Jason Merritt, Getty Images

Classic Chignon
It's tradition with a twist! This is a very chic style, almost a modern take on a chignon. We love it for any formal affair, royal wedding or not.

To achieve this look, create volume by teasing the hair at the crown of your head, fashion a side part, and gather locks into a low ponytail. Wrap the hair around the ponytail to create a bun and secure with pins.

We adore adding a flower or jeweled brooch, and it may be the perfect accent since there's likely to be antique jewelry incorporated into Middleton's wedding do.

Lauren Conrad dons a loose and flirty updo at the 2008 MTV Video Music Awards, and Eva Longoria Parker rocks a half up, half down hairstyle at the 2005 Golden Globes. Photos: Jeffrey Mayer, WireImage | J. Vespa, WireImage

Tousled Updo
This is a sophisticated yet sexy style -- ideal for any young princess. The front sections are separated in the middle and sway to each side, creating a flattering definition in the updo.

To achieve this look, add soft waves to your hair with a 1- or 1 ¼-inch curling iron, spraying each curl for hold. Flip your head upside down to create fullness. Take the back section of the hair and gather into a loose bun (leaving the front hanging down), and begin pinning the rest of the hair from the sides into the bun. Take pieces from each side and twist the hair back toward the bun and secure with pins. Leave the front loose for a flirty finish.

Half Up, Half Down Locks
This style gives the illusion of having your hair down, but it is pulled away from the face, allowing a neckline of royal jewels to shine. Many women feel sexier with their hair caressing their shoulders, so it's a good compromise for an elegant updo.

To achieve this look, add loose waves with a curling iron. Use your fingers to loosen the curls, then tease the top layers in horizontal sections to create volume. Smooth the crown for a polished look. Finally, secure the sides with pins or accessories.

Jessica Alba's modern braided bun at the 2008 Oscars. Photos: Steve Granitz, WireImage | Lester Cohen, WireImage

Braided Bun
Braids have made a huge come back. But today's version requires less shaping and less product to hold it in place, making for a softer, more romantic look.

To recreate this style, start by taking a section of hair from the front of your head and braiding it from left to right. Secure the braid with an elastic band similar to the color of your hair. Next, tease the hair at the crown of your head and then brush lightly back and spray with hair spray. Lastly, take the braid and combine it into the rest of your hair, gathering everything into a low bun. Secure with bobby pins. If you would like a more pronounced plait, make it the last section of hair you wrap around before securing your bun.

Which hairstyle do you think Middleton should don on her wedding day? Vote for your favorite below!

In other news, check out who may design the wedding dress.

And click here for Middleton's best style moments.